Section Classification of Laterally unsupported ISMB section

Section Classification of Laterally unsupported ISMB section

STAAD.Pro Model

Relevant STAAD.Pro model (.std file) can be downloaded from the following link:

STAAD.Pro model for IS 800:2007 verification example

Sectional Property details

Section ISMB250

A_x = 4760 mm²                                  Z_EZ = 410560 mm³

A_y = 1725 mm²                                  Z_EY = 53600 mm³

A_z = 3125 mm²                                  Z_PZ = 466000 mm³

I_xx = 250000 mm⁴                              Z_PY = 89700 mm³

I_yy = 3350000 mm⁴                                         f_y = 250 N/mm²

 r_y = 26.53 mm                                    F_U = 420 N/mm²

 r_z = 103.83 mm

Critical Design Forces

Axial Force (FX) = 710.792E-03 kN (Compression)

Shear force (FY) = -4.500E+00 kN    

Shear force (FZ) = 0.000E+00 kN

Torsion (MX) = 0.000E+00 kN-m    

Bending moment (MY) = 0.000E+00 kN-m       

Bending moment (MZ) = 1.914E+00 kN-m     

Section Classification 

STAAD.Pro Design Output